Leo had always been very clear about the broad direction, such as rebellion.
He was not actually a fool, nor would he tell those people infiltrating the Marines what they were to do next. It was not because he did not trust them; rather, as undercover agents, the less they knew, the safer they would be.
Even if a traitor emerged among them, if everyone knew roughly the same information, their value would greatly diminish. The government's CP intelligence agency might even cast a long line to catch a bigger fish.
That would make them very safe.
That was why Leo would not tell them much about the intelligence of their own organization.
He only taught them methods.
What methods?
For example, methods for training soldiers.
This would indeed strengthen the Marines' combat power, but from a broader perspective, if they could win over those strengthened Marines, the Revolutionary Army would suddenly have a dependable, battle-ready force.
And do not forget, Leo had pioneered this set of tactics. The tactics from the twenty-first century in his mind would not leave him helpless just because his opponents used line infantry volleys.
On the contrary, line infantry volleys were extremely outdated tactics to him. As long as the Marines faced him with such tactics, they would certainly suffer a crushing defeat next time.
He had even prepared Iska's excuse for promoting these tactics: simply tell the truth. They had encountered the Cutlass Pirates and been defeated by their tactics. It was highly effective and worth promoting.
That way, the Marines would naturally take it seriously.
Besides tactical training, they also had to be baptized by new ideas:
"Is the value of this world's existence dependent on the existence of nobles, royal families, and Celestial Dragons?"
"The answer is no. That should go